EsNo,EbNo以及SNR

最新推荐文章于 2024-06-26 09:43:17 发布

icesongqiang

最新推荐文章于 2024-06-26 09:43:17 发布

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本文探讨了在通信系统中Es/N0与Eb/N0之间的换算关系及其应用。通过公式Es/N0(dB)=Eb/N0(dB)+10log10(k)，解释了两者间的转换，其中k为每符号信息比特数。举例说明了在使用不同调制方式和编码速率时k的具体计算方法。

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matlab AWGN Channel

Relationship Between EsNo and EbNo
The relationship between EsNo and EbNo, both expressed in dB, is as follows:

Es/N0(dB)=Eb/N0(dB)+10log10(k)

where k is the number of information bits per symbol.

In a communication system, k might be influenced by the size of the modulation alphabet or the code rate of an error-control code. For example, if a system uses a rate-1/2 code and 8-PSK modulation, then the number of information bits per symbol (k) is the product of the code rate and the number of coded bits per modulated symbol: (1/2) log2(8) = 3/2. In such a system, three information bits correspond to six coded bits, which in turn correspond to two 8-PSK symbols.